N-(2,3-dihydroquinobenzoxazepin-3-ylidene)-o-(substituted carbamoyl) hydroxylamines

ABSTRACT

1-2-DIHYDROQUINNOBENZOXA (OR THIA)ZEPIN DERIVATIVES ARE PROVIDED HAVING THE STRUCTURES   1,8-(-((Y)N&#39;&#39;-1,2-PHENYLENE)-CH2-A-),4-(R1-N(-R2)-C(=Z)-   O-N=),(X)N-1,2,3,4-TETRAHYDROQUINOLINE OR   1,2-(-A-CH2-((Y)N&#39;&#39;-1,2-PHENYLENE)-N(-CH2-CH2-CH=N-O-C(=Z)-   N(-R2)-R1)-),(X)N-BENZENE   WHEREIN A IS O OR S; Z IS O OR S; X AND Y ARE THE SAME OR DIFFERENT AND CAN BE HALOGEN TRIFLUOROMETHYL, LOWER ALKYL, CYCLOALKYL, LOWER ALKYL-MERCAPTO, LOWER ALKOXY CYANO, ISOCYANIDO, OR DI-LOWER ALKYSULFAMOYL; R1 AND R2 CAN BE THE SAME OR DIFFERENT AND ARE HYDROGEN LOWER ALKYL, ARALKYL, ARYL, ARYLSULFONYL OR ALKYENYL; OR R1 AND R2 TAKEN TOGETHER WITH THE NITROGEN TO WHICH THEY ARE ATTACHED CAN BE A HETEROCYCLIC RADICAL HAVING THE FORMULA   -N&lt;(-(CH2)R-X&#39;&#39;-)(-R3)   IN WHICH X&#39;&#39; REPRESENTS NR4, O, S OR CH2 R REPRESENTS 1, 2 OR 3; R4 REPRESENTS HYDROGEN LOWER ALKYL, HYDROXY-LOWER ALKYL, LOWER ALKANOYLOXY-LOWER ALKYL, HYDROXY-LOWER ALKOXY-LOWER ALKYL, DI(LOWER-ALKYL)AMINO-LOWER ALKOXY-LOWER ALKYL, LOWER-ALKYLAMINO-LOWER ALKYL, DI-LOWER ALKYL AMINOLOWER ALKYL, AMINO-LOWER ALKYL DI-LOWER ALKYL AMINOR4 GROUPS; N IS 0, 1 OR 2; N &#39;&#39; IS 0,1, OR 2, AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF. THESE COMPOUNDS ARE USEFUL AS CENTRAL NERVOUS SYSTEM STIMULANTS, MUSCLE RELAXANTS, ANTI-INFLAMMATORY AGENTS, AND ANTIBACTERIAL AGENTS.

US. Cl. 260-287 R United States Patent ABSTRACT OF THE DISCLOSURE 1,2 -dihydroquinobenzoxa (or thia)zepine derivatives are provided having the structures I ACH:

(mg Ear)... Q on wherein A is O or S;'Z is O or S; X and Y are the same or difierent and can be halogen, trifluoromethyl, lower alkyl, cycloalkyl, lower alkyl-mercapto, lower alkoxy, cyano, isocyanido, or di-lower alkysulfamoyl', R and R can be the same or different and are hydrogen, lower alkyl,

in which X represents NR O, S orCH r represents 1,

2'01" 3; R represents hydrogen, lower alkyl, hydroxy-lower alkyl, lower alkanoyloxy-lower alkyl, hydroxy lower alkoxy-lower alkyl, di(lower alkyl)amino-lower alkoxy-lower alkyl, lower-alkylamino-lower alkyl,'di-lower alkyl aminolower alkyl, amino-lower alkyl; R represents any of the R groups; n is 0, 1 or 2; n is 0, 1, or 2, and pha'rmacentically acceptable salts thereof. These'compo'unds are useful ascent'ral nervous system stimulants, muscle relaxants, anti-inflammatory agents, and antibacterial agents.

,The present invention relates to carbamoyl and thiocarbamoyl derivatives of 1,2-dihydroquifiobenzoxa (or thia)zepine-3-one, oximes of the structure 1| RmN-il-OW 3,784,549 Patented Jan. 8, 1974 a! Wow-Nam II n z wherein Z is O or S, X and Y are the same or different and can be halogen, trifluoromethyl, lower alkyl, cycloalkyl,

lower alkylmercapto, lower alkloxy, cyano, isocyanido or 'di-lower alkylsulfamoyl, A is O or S, n is 0, 1 or 2 and n is 0, 1 or 2, and pharmaceutically acceptable acid-addition salts thereof, where possible.

The term lower alkyl as employed herein includes both straight and branched chain radicals of up to and including eight carbon atoms, for instance, methyl, ethyl, propyl, isopropyl, butyl, s-butyl, t-butyl, pentyl, hexyl, isohexyl, heptyl, 4,4-dimethylpentyl, octyl, 2,2,4trimethylpentyl and the like.

The term halogen includes F Cl, Br or I.

The lower alkylmercapto groups contain up to eight carbon atoms and inclued methylmercapto, ethylmercapto, propylmercapto and mercapto radicals containing any of the lower alkyl groups mentioned hereinbefore.

The terms lower alkyloxy and lower alkoxy are interchangeable and refer to groups containing up to eight carbon atoms and which include any of the lower alkyl groups mentioned hereinbeiore attached to an oxygen atom.

The term cycloalkyl includes saturated ring systems containing from three to seven carbons such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.

The term alkenyl includes mono-unsaturated straight chain or branched chain radicals of less than eight carbons corresponding to lower alkyl as defined above.

The substituted amino groups include monoor dilower alkyl-, arylalkyl-, lower alkylarylor arylamino wherein lower alkyl and aryl are as defined herein, such as methylamino, ethylamino, isopropylamino, heptylamino, dimethylamino, diethylamino, ethylmethylamino, butylrnethylamino, ethyl i-propylamino, anilino, ben'zylamino, 'diphenylamino, naphthylamino, or N-methyl-N- phenylamino and the like.

Theterm aryl as employed herein includes monocyclic carbocyclic aryl radicals, for instance, phenyl and substituted phenyl radicals, such as lower alkyl or alkoxy phenyl (e.g., 0-, m-, or p-tolyl, ethylphenyl butylphenyl and the like), di(lower alkyl)phenyl (e.g., 2,4-dimethylphenyl, 3,5-diethylphenyl, and the like, and corresponding alkoxy compounds), halophenyl (e.g., chlorophenyl, bromophenyl, iodophenyl and fiuorophenyl), o-, mor p-nitrophenyl, dinitrophenyl (e.g., 3,5-dinitrophenyl, 2,6- dinitrophenyl, and the like), and trinitrophenyl (e.g., picryl), and aminophenyl, such as p-dimethylaminophenyl.

In the above Formulae I and II, each of the carbocyclic aromatic rings can include 0, 1 or 2 substituents, other than hydrogen. The nature and position of the substituents in the starting materials will determine which isomer, Type I and/ or Type II, is obtained.

R and R may be the same or different and'represent hydrogen, lower alkyl, aralkyl, aryl, arylsultonyl and 3 alkenyl; NR R taken together is a heterocyclic radical having the formula in which X represents NR, 0, S or CH r represents 1, 2 or 3; R represents hydrogen, lower alkyl, hydroxy-lower alkyl, lower alkanoyloxy-lower alkyl, hydroxy-lower alkoxy-lower alkyl, di(lower alkyl)amino-lower alkoxylower alkyl, lower-alkylamino-lower alkyl, di-lower alkyl amino-lower alkyl,amino-lower alkyl; and R represents any of the R groups. These may be exemplified by piperidinyl; (lower alkyl)-piperidinyl [e.g., 2-, 3- or 4-(lower alkyl)piperidinyl]; (lower alkoxy)piperidinyl; pyrrolidinyl; (lower alkyl)-pyrrolidinyl; (lower alkoxy)pyrrolidinyl; piperazinyl; (lower alkyl)piperazinyl (e.g., N methylpiperazinyl); di(lower alkyl)piperazinyl; (lower alkoxy)piperazinyl; (hydroxylower alkyl)piperazinyl [e.g., N (2 hydroxyethyl)piperaziny1]; (lower alkanoyloxyalkyl)piperazinyl [e.g., N -(2 acetoxyethyl)piperazinyl]; (hydroxy-lower alkoxy-lower alkyl)piperazinyl [e.g., N -[2 (2 hydroxyethoxy)ethyl]piperazinyl]; di- (lower alkyl)amino-(lower alkoxy-lower alkyl)piperazinyl [e.g., N [2 (2 dimethylaminoethoxy)ethyl] piperazinyl]; homopiperazinyl; amino(lower alkyl) piperidinyl [e.g., 3-(aminomethyl)piperidinyl], lower alkylamino (lower alkyl)piperidinyl[e.g., 2-[(methylamino) ethyl]piperidinyl] di-lower alkylamino(lower alkyl) piperidinyl [e.g., 4- (dimethylamino)methylJpiperidinyl] The salts of the compounds of this invention include the acid-addition salts, particularly the non-toxic acid-addition salts. Acids useful for preparing the acid-addition salts, include inter alia, inorganic acids, such as the hydrohalic acids (e.g., hydrochloric and hydrobromic acid), sulfuric acid, nitric acid and phosphoric acid, and organic acids, such as oxalic, maleic, fumaric, tartaric, citric, pamoic, acetic, and succinic acid.

As will be seen hereinafter, the compounds of the invention are prepared from starting materials of the structure Where in the starting material III, n is 1 or 2 and X includes a strongly electronegative group like trifluoromethyl, cyano, isocyanido or di-lower alkylsulfamoyl substituent at the 7-position, and n is 0, or Y is a substituent at a position other than 3 and 4 in the starting material, cyclization is directed to the 4-position so that the Type H isomer is subsequently formed. However, where X is an ortho-para orienting group like halogen, especially chlorine, and n is l or 2 and at least one halogen is at the 7-position of starting material HI, or Y is lower alkyl, lower alkyloxy, cycloalkyl or lower alkylmercapto at any position or a strongly electronegative group at a position other than 3, or when n' is 0, a mixture of the Type I and Type II isomers is obtained.

Where in the starting material III, 21' is 1 or 2 and Y includes a strongly electronegative group like trifluoromethyl, cyano or di-lower alkylsulfamoyl at the 3-position, and n is or X is a substituent at a position other than 7 in the starting material, cyclization is directed to the 6-position so that the Type I isomer is subsequently formed.

Where in the starting material IH, n' is 1 or 2 and Y includes an ortho-para orienting substituent at the 3-position, and n is 0, or X is a substituent at a position other than 7 in the starting material, cyclization is directed to 4 the 6-position so that the Type I isomer is subsequently formed. v 7 Where n and n are 0, that is where there are no substituents on either aromatic ring, the Type I isomer is Where the starting material does not include substituents at the 3 and/or '7 positions, but does include substituents such as lower alkyl, lower alkyloxy, cycloalkyl or lower alkylmercapto at the 2, 8 and/or 9 positions, the Type I isomer is obtained.

Where the starting material does not include substituents at the 3 and/or 7 positions, but does include strongly electronegative groups at the 1 and/or 9 positions, the Type I isomer is obtained. However, where the starting material includes a strongly electronegative group at the 2 and/or 8 positions, then a mixture of the Type I and Type II isomers is obtained.

Where X represents a strongly electronegative group like trifluoromethyl, cyano or di-lower alkylsulfamoyl and n is 1 or 2, at least one X being at the 7-position of the starting material and Y is lower alkyl, lower alkylmercapto, cycloalkyl or lower alkoxy at any position or any of the above strongly electronegative groups at a position other than 3 in the starting material and n is 0, 1 or 2, the Type H isomer is obtained.

Where X is lower alkyl, lower alkyloxy, cycloalkyl, or lower alkylmercapto and n is l or 2 and Y is halogen, trifluoromethyl, cyano, isocyanido or di-lower alkylsulfamoyl, and n is 1 or 2 at least one Y being at the 3-position of the starting material, the Type I isomer is obtained. In this case, X can be trifluoromethyl or other strongly electronegative group so long as it is not in the 7-p0siti0n of the starting material as will be seen hereinafter.

Where X is lower alkyl, lower alkyloxy, cycloalkyl or lower alkylmercapto, and n is l or 2 and n' in (Y),,' is 0, the Type I isomer is obtained.

Where Y is lower alkyl, lower alkyloxy, cycloalkyl or lower alkylmercapto and n' is 1 or 2 and the n in (X) is 0, the Type H isomer is obtained.

Where both X and Y represent lower'alkyl, lower alkoxy and/or lower alkylmercapto, at least one of said groups being at the 3 and 7 positions of the starting material, the Type I isomer is obtained.

Preferred are those compounds of Formula I wherein n=0 and n=0 and A=O; those compounds of Formula I wherein n=0, n=1 and Y is Cl at the ll-position, and n=1, n'=0 and X is Cl at 4 position and A=O and those compounds of Formula II wherein n-=1, X is CF or Cl at the l1'-position, n=0, and A=O.

The compounds of the invention of Formulae I and H can be prepared by reacting an oxime of Formula V or VI A-CH,

N C BIO-Ni) with phosgene or thiophosgene at a temperature within the range of from about C. to about 100 C., employing a molar ratio of V or VIzphosgene or thiophosgene within the range of from about 0.1:1 to about 0.-8:1 to form compounds of the structure VH1 I and reacting compound VII and/or VIII with ammonia or a primary amine (R NH )v or a secondary amine. (R R NH).

Compounds of Formula I or II can also be prepared by reacting oxime V..or VI with a substituted carbamoyl halide IX 1 Q, -NR R (IX) wherein Q is C1 or Br, in the presence of a tertiary amine, at a temperature within the range of from,about 20 C. to about 100 C., employing a molar ratio of V or VIzIX within the range of from about QlSzlto. about 1:1, in a non-protic solvent.

Compounds of Formula I- or II wherein one of R or R is hydrogen can be prepared by reacting oxime V or VI with an alkyl, aralkyl or aryl isocyanate (R N=C=O) or isothiocyanate (R ,N: C;S) at a temperature within the range of from about 20 C. to about 100 C., employing a molar ratio of,v oximezcyanate of within the range of from about 0.8:1 to about 1:1.

Further, compounds of Formula I or II wherein one of R or R is hydrogenzcan; be prepared by reacting oxime V or VI with an acid azide I (mam) p a at a temperature within the range of from about 20 C. to about 60 C., employing a molar ratio of oximezazide within the range of froniabout 0.5:1 to about 0.8:1.

The 3-one, oxime'startingpate'rials (V and VI) of the invention can be prepared by reacting a compound of the structure (III) dinbmooon wherein X, Y, n, n, and- A are as defined hereinbefore,

with a phosphorus pentahalide, such as phosphorus pentachloride, in a molar ratio of III:pentahalide of within the range of from about 0.9:1 to about 1:1, in the absence (X): /A--CHg I O N C I of oxygen, and in the presence of aninert solvent, such as benzene, toluene, xylene, petane, hexane, etc., at a temperature within the range of from about 0 to about 10 C., to form an acyl halide of the structure The acyl halide X is reacted with anhyrous stannic chloride in a molar ratio of acyl halide Xzstannic chloride within the range of from about 0.4:1 to about 1:1, at a temperature within the range of from about 20 to about 30 C. to form the Formulas XI and XII 3 or 3'-one compounds depending upon the nature and the position a I of the X and Y substituents. 25

, The compounds of Formulas XI and/or XII can also be prepared by reacting the starting material (III) A-CH;

HzCHrCOOH with trifluoroacetic anhydride or phosphorus pentoxide,

'in a molar ratio of IIIztrifluoroacetic anhydride, or phos-v phorus pentoxide of within the range of from about The ketones of Formulae XI and XII react with hydroxylamine or the hydrohalide salt thereof in the presence of a solvent such as ethanol, methanol, etc., to give the corresponding oxime starting materials (V and- VI).

The starting materials of Formula III are prepared by a sequence of reactions. One step comprises reacting compounds having the formula: xm

7 with acrylonitrile to yield compounds of formula (XIV) A-CHI N HnCHzCN wherein n, n, X, Y and A are as defined herein.

This reaction is carried out by employing an excess of the acrylonitrile as the solvent. The temperature utilized in the reaction can be varied from about to about 100 C. with the preferred range being between about 0 and about 75 C. This reaction proceeds expeditiously when a small amount (up to about 1%) of a strong base like sodium hydroxide, sodium methoxide, potassium t-butoxide, or benzyl trimethylammonium hydroxide (Triton B) is used as the catalyst.

The next step for preparing compounds of Formula III is to treat the compounds of structure XXV with alcoholic hydrogen halide, such as hydrogen chloride in methanol, ethanol, and so forth, at room temperature whereby esters of the structure XV are formed.

wherein R' is lower alkyl.

By saponifying compound XV with an alkali metal hydroxide, e.g., sodium hydroxide, lithium hydroxide, and so forth, the desired carboxylic acids of structure HI can be recovered.

Examples of compounds of Formula XIII where A is S are set out in US. Pats. Nos. 3,188,321 and 3,188,322.

Examples of compounds of Formula XIV where A is O or S can be found in a paper entitled Novel Polycyclic Heterocycles, by Yale et al., J. Med. Chem. 13, 713 (1970).

Examples of starting materials which can be employed in preparing the compounds of the invention include, but are not limited to, the following wherein A can be 0 or S.

(1) A-on,

C CH

HzCHnCOOH A-Cm C C HzCHzCOOH A-CH:

.1 1 I OH N CH (lHgCHgCOOH (4) A-CI-I:

C CH

HICHICOOH A-CH:

CH CH (IHaCHzCOOH A-CH:

CH CH A-CH:

C1 Cl C CH (BHzCHzCOOH A-CH:

FsC

C CH

(lHzCHzC O OH A-CH:

NO OCH:

CH C

C HaCHaCOOH .A-CH:

NO SCH; CH CH dmomc O OH A-CH;

CH CH HaCHzCOOH A-CH:

HaCHaCOOH v A-CH:

Q S OzN C H M C) CH. N CH (EHQCHQC OH A--CH1 S O N CH JlI-hCHaC'OOH A-CHI F 0 CH N .C

' dmomooon 18) A-CH on on dmornooon dmomooorr N CH A-cHi o 0 CgHsO CFa CH N CH I 01 on CH on 2 a dmcmoooa CH. (lHaCH OOOH The new compounds of Formulae I and II are also useful as antimicrobial agents and may be used to combat infections in animal species, such as-mice, rats, dogs,

guinea pigs and the like, due to organisms such as Trichomonas vdginalis, Trich'omonas foetus, Staphylococcus aureus, Salmonella schottmuelleri, Klebsiella pneum'oniae, Proteus vulgaris, Escherichia coli, C. albicans or Trichophyton mentagrophytes. For example, a compound or mixture of compounds of Formulae I and II may be administered orally to an infected animal, e.g., to a mouse, in an amount of about 5 to 25 mg. per kg. per day in 2 to 4 divided doses. These may be conventionally formulated in a tablet, capsule or elixir containing about 10 to 250 mg. per dosage unit, by compounding the active substance or substances with the conventional excipient, vehicle, binder, preservative, flavor, etc., as called for by accepted pharmaceutical practice. They may also be applied topically, e.g., to dermatophytosis in a guinea pig, in a lotion, salve or cream at a concentration of about 0.01 to 3 percent by weight.

They may also be used as surface disinfectants. About 0.01 to 1 percent by weight of any of these substances may be dispersed on an inert solid or in a liquid such as water and applied as a dust or spray. They may be incorporated also, for example, in a soap or other cleansing agent, e.g., a solid or liquid detergent, detergent composition, for example, in general cleaning, in cleaning dairy barns or equipment or cleaning food handling or processing equipment.

The following examples illustrate the invention without, however, limiting the same thereto. All temperatures given are in degrees centigrade unless otherwise stated.

EXAMPLE 1 N-[2,3-Dihydro 11 (Irifiuoromethyl) 1 11,71 E[ Quino- [8,1-cd][1,51-Benzoxazepin 3 Ylidene] 0 (PhenylcarbamoyDhydroxylamine (I) 1,2-dihydro-11-(trifluoromethyl)-3g,7g-quino- [8,1-c,d] [1,5 ]benzoxazepin-3-one (A) 5,11-dihydro 7 (trifluoromethyl)dibenz[b,e]- [1,4]oxazepine-5-propionic acid-To 50.0 g. of 5,ll-diin 60 ml. of redistilled acrylonitrile is added in 5 minutes 0.80 ml. of Triton B. Subsequently, the mixture is heated for one hour under reflux and the product isolated by extraction with benzene to give 5,11-dihydro-7-(trifiuoromethyl)dibenz[b,e] [1,4] oxazepine S-propionitrile, M.P. about 161-163".

7-(trifiuoromethyl) 5,11 dihydrodibenz[b,e][1,4]- oxazepine-S-propionitrile, 15.0 g. is dissolved in 240 ml. of dry dioxane and to this 140 ml. of 30% methanolic hydrogen chloride is added. The solution is stirred for 36 hours, 6 m1. of H 0 is added, stirred 0.5 hour, and then concentrated in vacuo to 120 ml. The solid is filtered, and the filtrate is concentrated to dryness in vacuo. The residual liquid is taken up in 200 ml. of diethyl ether, treated with 'Darco and Hyflo, the diethyl ether solution is concentrated and the residue distilled in vacuo to give 5,11-dihydro 7 (trifluoromethyl)dibenz[b,e][1,4]oxazepine-S-propionic acid, methyl ester, B.P. about 166.

168 (0.08 mm.), M.P. about 70.0-71.5

7-(trifluoromethyl) 5,11 dihydrodibenz[b,e][1,4]- oxazepine-S-propionic acid, methyl ester, 3.15 g., is dissolved in 315 ml. of methanol and to this 0.5 g. of potas-- sium hydroxide dissolved in 25 ml. of water is added. The mixture is refluxed for 2.5 hours and then concentrated in vacuo. The residue is taken up in 250 ml. of

water and this solution is acidified with 2% aqueous HCl to give 5,11-dihydro-7-(trifluoromethyl)dibenz[b,e] [1,4]

oxazepine-S-propionic acid, M.P. about 94-96; this on recrystallization from hexane gives 2.8 g. of the product, M.P. about -107".

(B) 1,2 dihydro 11 (trifluoromethyl) 3E,7 H quino[8,1-c,d][1,5]benzoxazepin 3 one.-A solution of 6.86 g. of 5,11-dihydro 7 (trifluoromethyl) dibenz- [b,e][1,4]oxazepine 5 propionic acid in 50 m1. of benzene is cooled to 5-10. To this is added dropwise with stirring a solution of 4.6 g. of PCl in 25ml. of benzene over a period of 15 minutes. The solution is stirred at 25 for 40 minutes and then at 4050 for another 20 minutes. The reaction mixture is then heated at 55 for 10 minutes, cooled to 10 and to this is added dropwise with stirring a solution of 12.0 g. anhydrous SnCL, in 20 ml. of benzene. After stirring 20 minutes at 10 and 20 minutes at room temperature, 100 ml. of ether are added, followed by 10 ml. of concentrated hydrochloric acid, and then 100 ml. of water. After stirring vigorously for 10 minutes, the organic phase is separated and the aqueous phase is extracted with 100 ml. of ether. The combined organic extracts are washed, dried, filtered, and concentrated to dryness to give 6.9 g. of residue; this is crystallized from 2-propanol to give 4.3 g. of product, M.P. about 140-142".

(II) 1,2-dihydro-1 1- (trifluoromethyl) 65,711; quino 8, l-c,d] [1,5 benzoxazepin-3-one, oxime A solution of 28.0 g. of the ketone from part I(B) and 13.6 g. of hydroxylamine hydrochloride in 600 ml. of warm 70% ethanol is refluxed for 4 hours and kept at room temperature to give a pale yellow crystalline solid. This is filtered and recrystallized from 70% ethanol to give 21.0 g. of the product, M.P. about 198-200 (dec.).

(III) N-[2,3 dihydro -11 (trifluoromethyl) lgflgquino[8,1-c,d][1,5]benzoxazepin 3 ylidene] O- (phenylcarbamoyl) hydroxylamine A mixture of 5.0 g. of 1,2-dihydro 11 (trifluoromethyl) 3 H ,7g quino[8,1-c,d][l,5]benzoxazepine-3- one, oxime, 1.8 g. of phenyl isocyanate, and 1.2 g. of pyridine in 50 ml. of benzene is heated under reflux for about 1 hour. The reaction mixture is cooled and filtered to give 7.0 g. of a solid that is recrystallized from 400 ml. of benzene to give 5.7 g. of the product, M.P. about 216218 (dec.).

EXAMPLE 2 N-[ll chloro 2,3 dihydro 111,811 quino[1,8-a,b]- [4,1]benzothiazepin 3 ylidene] (p dimethylaminophenylcarbamoyl)-hydroxylamine By following the procedure of Example 1, but replacing 1,2 dihydro 11 (trifluoromethyl)-3g,7 1I -quino- [8,1-c,d] [1,5]benzoxazepin 3 one, oxime and phenyl isocyanate with 11 chloro 1,2 dihydro 3g,8

quino[1,8a,b][4,1]benzothiazepin 3 one, oxime and pdimethylaminophenyl isocyanate, respectively, there is obtained the title product.

11 chloro 2,3 dihydro l EL8 E I quino[l,8-a,b] benzo-thiazepine 3 one, oxime is prepared as follows.

(A) 3 chloro 5,11 dihydrodibenzo[b,e][l,4]thiazepine propionic acid.A suspension of 24.6 g. of 3 chloro 5,11 dihydrodibenzo[b,e] [l,4]thiazepine in 55 ml. of acrylonitrile is cooled to 0-5. To this is added dropwise 0.3 ml. of Triton B. The temperature rises slowly from 3 to 14 and then rapidly to 45 within 5 minutes with the formation of red colored clear solution. The mixture is cooled to 5l0, stirred for 5 minutes, allowed to come to room temperature and then heated under reflux for 1.5 hours. The excess of acrylonitrile is removed in vacuo; the residue is extracted with 3-350 ml. portions of diethyl ether; the combined ether extracts are decolorized and concentrated to give 31.6 g. of 3 chloro 5,11 dihydrodibenzo[b,e] [1,4]thiazepine- S-propionitrile, B.P. about 205-2l0 (0.2 mm.).

To the 3 chloro 5,11 dihydrodibenzo[b,e][l,4] thiazepine 5 propionitrile, 71.1 g., in 1200 ml. of dry dioxane is added 800 ml. of 30% methanolic hydrogen chloride. The solution is stirred for 72 hours; 30 ml. of water is added; the mixture is stirred for 0.5 hours, concentrated in vacuo to about 400 ml., filtered, and the filtrate concentrated to dryness in vacuo. The residue solidifies on keeping to yield methyl 3-chloro 5,11 dihydrodibenzo [b,e] 1,4] thiazepine-S-propionate.

To the methyl 3 chloro 5,11 dihydrodibenzo- [b,e] [1,4]thiazepine 5 propionate, 25.4 g., in 2200 ml. of methanol is added a solution of 5.6 g. of potassium hydroxide in 300 ml. of water. The mixture is heated under reflux for 4 hours and then is concentrated in vacuo. The residue is taken up in 600 ml. of water, cooled, and then acidified with 2% aqueous hydrochloric acid. The solid is filtered and recrystallized from benzene to yield 3 chloro 5,11 dihydrodibenzo[b,e][l,41thiazepine-S-propionic acid.

(B) 11 chloro 1,2 dihydro 3g,8 H quino[l,8- a,b] [4,1]benzothiazepin 3 one.3-chloro 5,11 dihydro[b,e][1,4]thiazepine 5 propionic acid, 3.7 g., is dissolved in 20 ml. of benzene and to the solution at 20 is added dropwise, 2.8 g. of trifluoroacetic anhydride. The reaction mixture is heated under reflux for 5 minutes, poured into 250 ml. of cold water, and extracted with 150 ml. of benzene. The benzene solution is concentrated to dryness and the residue is recrystallized from 2-propanel to give about 2.3 g. of product.

(C) 11 chloro 1,2 dihydro 3E,8 H quino[l,8- a,b] [4,1]benzothiazepin 3 one, oxime.A solution of 28.0 g. of 11 -chloro 1,2 dihydro 353g quino- [LS-a,b][4,1]benzothiazepin 3 one and 13.6 g. of hydroxylamine hydrochloride in 600 ml. of warm 70% ethanol is refluxed for 4 hours and kept at room temperature to give a pale yellow crystalline solid. This is filtered and recrystallized from 70% ethanol to give 21.0 g. of the oxime.

EXAMPLE 3 N [2,3 dihydro lgsg quino[1,8-a,b] [4,1]benzoxazepin 3 ylidene] O (p-nitrophenylthiocarbamoyl) hydroxylamine A mixture of 4.7 g. of 1,2 dihydro 3,8 1 quino- [1,8-a,b] [4,1]benzoxazepin 3 one oxime, prepared as described in Example 1, parts I and II, employing 5,11- dihydrodibenzo[b,e][1,4]oxazepine as the starting material in lieu of 5,11 dihydro 7 (trifluoromethyD-dibenzo[b,e][1,4]thiazepine, 2.5 g. of p nitrophenylisothiocyanate and 20 ml. of pyridine is heated at about for 1 hour. The solvent is removed in vacuo and the semi-solid residue is crystallized from hexane to give about 3.4 g. of the product.

EXAMPLE 4 N-[11-Chloro-2,3 Dihydro-l] E[ ,8I -Quino[l,8-a,b] [4,1] Benzoxazepin 3 Ylidene] O (Methylcarbamoyl) Hydroxylamine (I) 1l-chloro-l,2-dihydro-3 ll,8g-quino 1,8-a,b] [4,1]

benzoxazepin-3-one (A) 3 chloro 5,11 dihydrodibenz[b,e] [1,4]oxazepine-S-propionic acid.A suspension of 24.4 g. of 3-chloro-5,11-dihydrodibenz[b,e] [1,4] oxazepine in 55 m1. of acrylonitrile is cooled to 05. To this is added with efficient stirring and cooling, 0.3 ml. of Triton B, pausing after each drop of addition. The temperature rises slowly from 3 to 14 and then rapidly to 45 within 5 minutes with the formation of red colored clear solution. The mixture is cooled to 5l0, stirred for 5 minutes, allowed to come to room temperature and then slowly heated to reflux temperature. After 1 hour heating under reflux, the excess of acrylonitrile is removed in vacuo. The residue is extracted with 3-350 ml. portions of diethyl ether, the combined diethyl ether extracts are treated with 3.0 g. of Darco and 1.0 g. of Hyflo, filtered, the filtrate is dried and concentrated to give 31.6 g. of 3-chloro-5,11- dihydrodibenz[b,e] [1,4]oxazepine 5 propionitrile, B.P. about ZOO-210 (0.2 min.).

The 3 chloro-5,11-dihydrodibenz[b,e] [1,4]oxazepine- S-propionitrile, 71.10 g., is dissolved in 1200 ml. of dry dioxane and to this 800 ml. of 30% methanolic hydrogen chloride is added. The solution is stirred for 72 hours, 30 m1. of H 0 is added, the mixture is stirred for 0.5 hour, concentrated in vacuo to 400 ml. filtered, and the filtrate concentrated to dryness in vacuo. The residue solidifies on 27 What is claimed is: 1. A compound having the structure wherein Z is O or S; X and Y taken separately are each hydrogen or chloro, at least one of X and Y being hydrogen, R and -R taken separately are the same or different and are each hydrogen, lower alkyl, phenyl, nitrophenyl, halophenyl, or di-(1ower alkyl)-arninopheuyl, wherein lower alkyl is an alkyl group having up to eight carbon atoms, and a non-toxic acid-addition salt thereof.

2. A compound in accordance with claim 1 wherein Z is 0.

3. A compound in accordance with claim 1 wherein Z is S.

4. The compound in accordance with claim 1 having the structure O-GH:

N CH (CHahN-E-Obli) 5. A compound having the structure O-GH: Fee 6 CH N NOE N(CH!)Z 9. The compound in accordance with claim 5 having the structure F O a l H N,/

References Cited UNITED STATES PATENTS 7/1972 Yale et al 260-288 R DONALD G. DAUS, Primary Examiner U .S. Cl. X.R.

2602l3 B, 239 BC, 247.1, 247.2, 268 PC, 268 C, 283 CN, 283 S, 283 SY, 283 SA, 288 R, 327 B, 333, 999, 2938 S, 24388; 252106 

